Manufacturers, wholesale environmental Y40Mn cutting steel Y40Mn easy to iron cutting round Y40Mn Introduction: Y40Mn is high sulfur carbon free cutting steel, better cutting performance, with 45 steel can improve tool life compared to fourfold increase production efficiency of 30%, has high strength and hardness, suitable for machining parts require high rigidity, such as screw, rod, rack and the spline shaft. Standard: GB / T 8731-1988 Chemical Composition: Carbon C: 0.37 ~ 0.45 Si Si: 0.15 ~ 0.35 Mn Mn: 1.20 ~ 1.55 Sulfur S: 0.20 ~ 0.30 P P: ≤0.05 Advantages: Diversity of shape specifications through the design of different shapes mold, cold out different cross-sectional shapes, different sizes tolerances easy cutting of steel. Angle can be at right angles or rounded. High accuracy using high-quality carbide die to ensure accurate tolerance, unity. Smooth surface Advanced cold extrusion process allows easy cutting of steel product surface smooth and bright. Mechanical Properties: Tensile strength σb (MPa) :( hot rolled) 590 to 735; (tempering condition after cold drawing) 590 to 785 Elongation δ5 (%) :( hot rolled) ≥14; (cold) ≥17 section shrinkage ψ (%) :( hot rolled) ≥20 Hardness: (hot rolled) ≤207HB; (cold drawn) 179 ~ 229HB Delivery status: hot-rolled or cold-drawn delivery, the delivery status should specified in the contract. . 15 is a cutting structural steel, good accuracy, easy cutting, greatly improve the life of the tool, reducing process time increases. Is S-P composite high sulfur, low silicon cutting steel. Cutting significantly higher than Y12, productivity increased by 30 ~ 50% higher than Y12 steel, especially when tapping, tap life more than double than the Y12.